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Bluetooth gadget showcase from CES 2016 (pictures)

NSBlog

Debugging a complex problem is tough, and it can be especially difficult when it's not obvious which chunk of code is responsible. It's common to …

Objective-C

Learn OpenCV: Insights from a Computer Vision and Deep Learning Entrepreneur and Enthusiast

The OpenCV (Open-Source Computer Vision) Library is, as many of you likely already know, a key enabler for the practical deployment of computer …

webcam-pulse-detector

README.md<p>- UPDATE: Now with Python 3.5+ and OpenCV 3.0+ support<p>Stand-alone (no dependancy) precompiled application:<p>Download for Windows 7 and 8: …

OpenCV for Secret Agents - OpenCV library

For intermediate and advanced programmers, this book teaches a broad range of skills in computer vision, signal processing, and application …

A Bit of Background

OpenCV is an open-source computer vision and machine learning library. It contains thousands of optimized algorithms, which provide a common toolkit …

that thing in swift

Automatic migration from Xcode<p>Sat, Sep 17, 2016<p>Upgrade to Xcode 8 without migrating to Swift 3<p>Tue, Aug 23, 2016<p>Find problem areas in Xcode and …

Extending existing classes (Method Swizzling) | Marc's Realm

Objectiv-C is very dynamic language that allows for some neat tricks. One of them is to exchange one method with another. While that doesn't sound …

iOS Apps

UIActivityViewController

The relationship between code and data has long been a curious one.<p>Certain programming languages, such as Lisp, Io, and Mathematica are homoiconic, …

Social Media

Tutorial

Here’s a tutorial to get you started using Spark.publish(). Let’s imagine you want to monitor your core’s uptime, that is, how many hours, minutes, …

Tutorials

Introduction to C++ for iOS Developers: Part 2

Hello, C++!<p>Welcome back to second part of the Introduction to C++ for iOS Developers series!<p>In the first part of this series, you learned about …

Objective-C

A Short History of Text on iOS

The release of iOS 7 brings a lot of new tools to the table for developers. One of these is <i>TextKit</i>. TextKit consists of a bunch of new classes in …

iOS Programming

You're Doing It Wrong #2: Sizing labels with <code class="prettyprint">-[NSString sizeWithFont:...]</code

Author's note: Well, I've already blown my one-post-per-week target. UIButton's insets behaviour finally got the best of me and I had to take a major …

This Crowdsourced RoboCop Remake is Bonkers

There are fans, and then there are <i>fans</i>.<p>Ahead of an official remake coming to a cinema near you soon, one group of RoboCop aficionados have created their very own incarnation of the classic 80s flick. Crowdsourced by fifty professional and amateur filmmakers from Los Angeles and New York, the …

The best iOS development links, every Friday

News<p>The App Store turns 10<p>Last year we had the ten year anniversary of the original iPhone, which means that this year it's the turn of the App …

Gfycat Turns Animated GIFs Into HTML5 Video, Pulls Clips From YouTube

If you've been exploring the fine art of animated GIFs, but found that some of them were a bit too large to share easily, Gfycat can help.<p>The service …

How can I make a UITextField move up when the keyboard is present?

With the iOS SDK:<p>I have a UIView with UITextFields that bring up a keyboard. I need it to be able to:<p>Allow scrolling of the contents of the …

Objective-C

Reader Submissions -<br/> New Year's 2014

As we prepare to increment our NSDateComponents -year by 1, it’s time once again for NSHipster end-of-the-year Reader Submissions! Last year, we got …

Search Your iPhone's Email Quicker with These Keywords

Trying to find some random email in your inbox is never fun and it's even harder on an iPhone. However, when you search Mail on your iPhone, you can …

[Objective C] UIImage+ImageEffects

// UIImage+ImageEffects.m<p>// AnimationExamples<p>// Created by Timothy Patrick Johnson on 7/3/13.<p>// Copyright (c) 2013 Meister. All rights …

iOS Programming

NSFileManager

NSFileManager is Foundation’s high-level API for working with file systems. It abstracts Unix and Finder internals, providing a convenient way to …

High Level

Network Link Conditioner

Product design is about empathy. Knowing what a user wants, what they like, what they dislike, what causes them frustration, and learning to …

Key-Value Observing

Ask anyone who’s been around the NSBlock a few times: Key-Value Observing has the <i>worst</i> API in all of Cocoa. It’s awkward, verbose, and confusing. And …

JavaScript